Positive Connotations:
* Passionate: This emphasizes strong enthusiasm and dedication.
* Zealous: This suggests fervent and eager commitment.
* Devoted: This highlights a strong sense of loyalty and commitment.
* Ardent: This signifies intense and passionate feeling.
Neutral Connotations:
* Enthusiastic: This is a milder term that simply indicates a strong interest.
* Eager: This emphasizes an intense desire or willingness.
* Dedicated: This stresses the commitment to a particular cause.
Negative Connotations:
* Obsessed: This implies an unhealthy preoccupation.
* Bigoted: This suggests intolerance and prejudice.
* Dogmatic: This refers to holding rigidly to beliefs without considering other viewpoints.
* Zealot: This suggests extreme and often dangerous devotion.
Informal Connotations:
* Crazy about: This emphasizes a very strong liking.
* Die-hard: This refers to someone who is extremely loyal.
* Fanatic: This is a more informal and often negative term.
The best alternative for "fanatical" will depend on the context and the message you want to convey.